Rocky Mountain National Park, Colorado, USA — Moonrise, Moonset, and Moon Phases, December 2025

Moonrise, Moonset, and Phase Calendar for Rocky Mountain National Park, December 2025

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2025	Moonrise/Moonset						Meridian Passing
Dec	Moonrise		Moonset		Moonrise		Time		Distance (mi)	Illumination
1	-		3:02 am	↑ (283°)	2:05 pm	↑ (73°)	9:06 pm	(64.3°)	224,861	88.5%
2	-		4:20 am	↑ (292°)	2:37 pm	↑ (64°)	10:02 pm	(70.2°)	222,758	95.2%
3	-		5:42 am	↑ (300°)	3:16 pm	↑ (58°)	11:05 pm	(74.8°)	221,835	99.0%
4	-		7:04 am	↑ (306°)	4:07 pm	↑ (53°)	Moon does not pass the meridian on this day.
5	-		8:20 am	↑ (308°)	5:10 pm	↑ (52°)	12:11 am	(77.3°)	222,241	99.6%
6	-		9:25 am	↑ (307°)	6:23 pm	↑ (54°)	1:19 am	(77.5°)	223,962	97.0%
7	-		10:15 am	↑ (303°)	7:39 pm	↑ (59°)	2:24 am	(75.4°)	226,798	91.4%
8	-		10:54 am	↑ (298°)	8:55 pm	↑ (65°)	3:23 am	(71.5°)	230,433	83.5%
9	-		11:24 am	↑ (290°)	10:06 pm	↑ (73°)	4:16 am	(66.4°)	234,466	74.2%
10	-		11:49 am	↑ (283°)	11:13 pm	↑ (81°)	5:04 am	(60.6°)	238,557	64.0%
11	-		12:11 pm	↑ (275°)	-		5:48 am	(54.5°)	242,383	53.5%
12	12:17 am	↑ (89°)	12:31 pm	↑ (267°)	-		6:29 am	(48.3°)	245,729	43.3%
13	1:19 am	↑ (97°)	12:51 pm	↑ (259°)	-		7:10 am	(42.4°)	248,439	33.5%
14	2:20 am	↑ (105°)	1:12 pm	↑ (252°)	-		7:50 am	(36.8°)	250,452	24.6%
15	3:21 am	↑ (112°)	1:36 pm	↑ (246°)	-		8:32 am	(31.7°)	251,754	16.8%
16	4:23 am	↑ (118°)	2:03 pm	↑ (240°)	-		9:17 am	(27.3°)	252,388	10.2%
17	5:26 am	↑ (123°)	2:36 pm	↑ (236°)	-		10:04 am	(23.9°)	252,425	5.2%
18	6:27 am	↑ (127°)	3:16 pm	↑ (233°)	-		10:53 am	(21.6°)	251,948	1.8%
19	7:24 am	↑ (128°)	4:05 pm	↑ (232°)	-		11:45 am	(20.6°)	251,040	0.3%
20	8:16 am	↑ (128°)	5:01 pm	↑ (233°)	-		12:37 pm	(21.1°)	249,770	0.7%
21	9:00 am	↑ (126°)	6:03 pm	↑ (236°)	-		1:29 pm	(23.0°)	248,185	3.1%
22	9:36 am	↑ (121°)	7:08 pm	↑ (241°)	-		2:19 pm	(26.3°)	246,306	7.5%
23	10:07 am	↑ (116°)	8:15 pm	↑ (247°)	-		3:07 pm	(30.7°)	244,145	13.7%
24	10:33 am	↑ (109°)	9:22 pm	↑ (255°)	-		3:53 pm	(36.0°)	241,705	21.7%
25	10:56 am	↑ (101°)	10:28 pm	↑ (263°)	-		4:37 pm	(42.0°)	239,006	31.1%
26	11:19 am	↑ (93°)	11:36 pm	↑ (271°)	-		5:21 pm	(48.5°)	236,099	41.6%
27	11:41 am	↑ (84°)	-		-		6:07 pm	(55.2°)	233,092	52.9%
28	-		12:46 am	↑ (280°)	12:05 pm	↑ (76°)	6:55 pm	(61.7°)	230,153	64.3%
29	-		1:59 am	↑ (289°)	12:33 pm	↑ (68°)	7:47 pm	(67.8°)	227,505	75.2%
30	-		3:16 am	↑ (297°)	1:07 pm	↑ (61°)	8:45 pm	(72.9°)	225,417	84.9%
31	-		4:35 am	↑ (303°)	1:50 pm	↑ (55°)	9:48 pm	(76.3°)	224,168	92.7%
* All times are local time for Rocky Mountain National Park. They take into account refraction. Dates are based on the Gregorian calendar. Illumination is calculated at lunar noon.

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